dm_test_dmu...trol_null_dc(9)

📦 version 7.3.1, in nixpkgs unstable

🌸 dm_test_dmu...trol_null_dc(9) — from the Kernel API Manual, bestie 💅

okay so hi, welcome to the little corner of the Kernel API Manual that covers dm_test_dmub_outbox_interrupt_control_null_dc(9) ✨ yes the title up top is weirdly truncated, that's just how the page header renders it, the actual function name is the long one below, we move 🫶

💖 NAME

dm_test_dmub_outbox_interrupt_control_null_dc — a test for outbox irq control with a NULL dc 🎀

like that's literally it, it's a test, and it's testing outbox irq control, and it's doing it with NULL dc. slay.

⭐ SYNOPSIS

void dm_test_dmub_outbox_interrupt_control_null_dc (struct kunit *test );

that's the whole signature, no cap 🔥

🦋 ARGUMENTS

  • test — the KUnit test context 💜 it's the little bundle of test bookkeeping that KUnit hands you and you just pass it along, iykyk

🌈 DESCRIPTION

okay so here's the tea ☕ — amdgpu_dm_irq_set is NULL-safe and returns false when dc is NULL. so the helper just returns false and never even touches the real interrupt hardware 💀

which like — iconic behaviour honestly. no hardware, no problems. it's giving "we tested the NULL path without bricking anything" energy 👑

👑 SEE ALSO

so there are a lot of sibling tests, and we are listing every single one because we do not skip, periodt 💅

  • Kernel file — ./drivers/gpu/drm/amd/display/amdgpu_dm/tests/amdgpu_dm_helpers_test.c 📁

and the whole friend group:

okay that's the whole page bestie, and before you go — the source line at the bottom pointed at ./drivers/gpu/drm/amd/display/... and the date stamp says October 2026 ⭐ so like, bookmark that path and remember when this dropped 💖 mwah, go read the other 141 tests 🎀

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